| abstract |
A knock type writing instrument provided with a simple mechanism capable of stable kneading and operation. The knock type writing instrument 1 includes a barrel 2, a refill 5 disposed in the barrel 2, a spring 6 for pressing the refill 5 backward, 6 and a main rotor 30 which is pressed forward against the pressing force of the main rotor 30 and the main rotor 30. By performing the knocking operation, the handwriting state and the nonwriting state can be switched, A knock lock member 50 movable in the front and rear direction within the barrel 2 by gravity and an engagement portion 60 provided on the barrel 2 side and engageable with the knock lock member 50, When the front end of the barrel 2 is directed upward, the knock lock member 50 moves rearward and engages with the engaging portion 60, so that forward movement of the operating portion 20 is prevented. |